Link Accounts with Same Email Address

What does it do?

This rule will link any accounts that have the same email address.

Note: When linking accounts, only the metadata of the target user is saved. If you want to merge the metadata of the two accounts you must do that manually. See the document on Linking Accounts for more details.

How do I use it?

Just create a new rule in the Auth0 dashboard, and copy the following code replacing the placeholders with the appropriate values.

What is Rule-Based Authentication?

A rule is arbitrary JavaScript code that can be used to extend Auth0s default behavior when authenticating a user. Enabled rules will be executed in the order shown below for all users and applications as the final step of the authentication process.

Rules can be used to enrich and transform the user profile, deny access to specific users under certain conditions, retrieve information from external services and much more. For more information about rules, please check the documentation